The Water Tank Cap is a versatile accessory designed for various scenarios such as water tanks, RVs, and yacht. It provides convenience for refueling and adding water. The installation is simple and does not require professional tools. The stylish design enhances the aesthetic appeal of the product. It also effectively protects the fuel and water tank openings. Features -Color:Multi -Material:Nylon -Size:8.50X7.00X4.00cm/3.34X2.75X1.57in -Opening diameter: 50mm - connection diameter: 38mm -Screw hole diameter: 5mm -This accessory is designed to provide a versatile solution for refueling and adding water to water tanks, rvs, and yacht in various scenarios. -Its durable construction ensures performance and protection against the elements. -The easy installation process eliminates the need for professional tools, making it a convenient addition to your vehicle or vessel. -The stylishdesign not only enhances the aesthetic appeal of water tank or rv, but also adds a touch of sophistication to your overall setup. -Whether you're on the road or at the beach, this accessory is a must-have for anyone who wants to ensure convenient and efficient refueling and water addition. Package list: 4 x rv water inlet